Not sure where I should post this but I figured this would probably be the right section. I'm sure someone here is running or familiar with OSS4. Posted this over on the OSS forum but it seems kinda slow over there.
I'm running LMDE, just compiled and installed OSS4 last night. WOW what a difference compared to pulse. It's like someone lifted a wet blanket off my speakers. I've got playback working from most programs so far in stereo, but I cannot for the life of me get OSS to enable the sub output on my motherboard. The motherboard is 8-channel and I have it set to "multich" in ossxmix.
The output of 'ossinfo -v3' indicates "2-8" channels with preferred channels being "not indicated". I'm doing my best to understand this stuff and I just spent a few hours on google with not much reward. I feel like I need to remap something but I'm not 100% sure what it is.
Is it possible to enable just 2.1 rather than full surround? If not I can play with my sub setup, but I'd rather not have to run line level inputs if possible.
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ossinfo -v3
Version info: OSS 4.2 (b 2005/201111070705) (0x00040100) GPL
Platform: Linux/x86_64 3.0.0-1-amd64 #1 SMP Sat Aug 27 16:21:11 UTC 2011 (linux)
Number of audio devices: 8
Number of audio engines: 12
Number of MIDI devices: 0
Number of mixer devices: 1
Device objects
0: osscore0 OSS core services
1: oss_hdaudio0 ATI HD Audio interrupts=4637998 (4638177)
HD Audio controller ATI HD Audio
Vendor ID 0x10024383
Subvendor ID 0x1043836c
Codec 0: Unknown (0x11060397/0x1043836c)
2: oss_usb0 USB audio core services
MIDI devices (/dev/midi*)
Mixer devices
0: High Definition Audio 0x1106039 (Mixer 0 of device object 1)
Device file /dev/oss/oss_hdaudio0/mix0, Legacy device /dev/mixer0
Priority: 10
Caps:
Device handle: PCI836c1043-0000:00:14.2-mx01
Device priority: 10
Audio devices
HD Audio play pcm1 /dev/oss/oss_hdaudio0/pcm0 (device index 0)
Legacy device /dev/dsp0
Caps: DUPLEX TRIGGER MMAP
Modes: IN/OUT
Out engine 1: 0/HD Audio play pcm1
Busy (OUT) label 'VMIX'
Engine 2: 8/HD Audio play pcm1 (vmix)
Busy (OUT) by PID 4598 / mpegaudioparse5 label 'mpegaudioparse5'
Engine 3: 9/HD Audio play pcm1 (vmix)
Available for use
Engine 4: 10/HD Audio play pcm1 (vmix)
Available for use
Engine 5: 11/HD Audio play pcm1 (vmix)
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI836c1043-0000:00:14.2-au01
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 8
Native sample rates (min - max): 44100 - 192000 (44100,48000,88200,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio play pcm2 /dev/oss/oss_hdaudio0/pcm1 (device index 1)
Legacy device /dev/dsp1
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 1/HD Audio play pcm2
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI836c1043-0000:00:14.2-au02
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,88200,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio play pcm3 /dev/oss/oss_hdaudio0/pcm2 (device index 2)
Legacy device /dev/dsp2
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 2/HD Audio play pcm3
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI836c1043-0000:00:14.2-au03
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,88200,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio play pcm4 /dev/oss/oss_hdaudio0/pcm3 (device index 3)
Legacy device /dev/dsp3
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 3/HD Audio play pcm4
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI836c1043-0000:00:14.2-au04
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,88200,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio play spdifout1 /dev/oss/oss_hdaudio0/spdout0 (device index 4)
Legacy device /dev/dsp4
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 4/HD Audio play spdifout1
Available for use
Input formats (0x00001410):
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001410):
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI836c1043-0000:00:14.2-au05
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,88200,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio play spdifout2 /dev/oss/oss_hdaudio0/spdout1 (device index 5)
Legacy device /dev/dsp5
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 5/HD Audio play spdifout2
Available for use
Input formats (0x00001410):
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001410):
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI836c1043-0000:00:14.2-au06
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,88200,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio rec select1 /dev/oss/oss_hdaudio0/pcmin0 (device index 6)
Legacy device /dev/dsp6
Caps: DUPLEX TRIGGER MMAP
Modes: IN/OUT
In engine 1: 6/HD Audio rec select1
Busy (IN) label 'VMIX_IN'
Engine 2: 8/HD Audio play pcm1 (vmix)
Busy (OUT) by PID 4598 / mpegaudioparse5 label 'mpegaudioparse5'
Engine 3: 9/HD Audio play pcm1 (vmix)
Available for use
Engine 4: 10/HD Audio play pcm1 (vmix)
Available for use
Engine 5: 11/HD Audio play pcm1 (vmix)
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI836c1043-0000:00:14.2-au07
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio rec jack6 /dev/oss/oss_hdaudio0/pcmin1 (device index 7)
Legacy device /dev/dsp7
Caps: TRIGGER MMAP
Modes: INPUT
In engine 1: 7/HD Audio rec jack6
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI836c1043-0000:00:14.2-au08
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
Nodes
/dev/dsp -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_in -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_out -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_ac3 -> /dev/oss/oss_hdaudio0/spdout0
/dev/dsp_mmap -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_multich -> /dev/oss/oss_hdaudio0/pcm0
'ossinfo -a'
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Audio devices
HD Audio play pcm1 /dev/oss/oss_hdaudio0/pcm0 (device index 0)
HD Audio play pcm2 /dev/oss/oss_hdaudio0/pcm1 (device index 1)
HD Audio play pcm3 /dev/oss/oss_hdaudio0/pcm2 (device index 2)
HD Audio play pcm4 /dev/oss/oss_hdaudio0/pcm3 (device index 3)
HD Audio play spdifout1 /dev/oss/oss_hdaudio0/spdout0 (device index 4)
HD Audio play spdifout2 /dev/oss/oss_hdaudio0/spdout1 (device index 5)
HD Audio rec select1 /dev/oss/oss_hdaudio0/pcmin0 (device index 6)
HD Audio rec jack6 /dev/oss/oss_hdaudio0/pcmin1 (device index 7)
Nodes
/dev/dsp -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_in -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_out -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_ac3 -> /dev/oss/oss_hdaudio0/spdout0
/dev/dsp_mmap -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_multich -> /dev/oss/oss_hdaudio0/pcm0
Also, 'ossmix'
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ossmix
Selected mixer 0/High Definition Audio 0x11060397
Known controls are:
jack.jack1c.mute ON|OFF (currently OFF)
jack.jack1c.pcm11 [<leftvol>:<rightvol>] (currently 62.9:62.9 dB)
jack.jack1c.pcm12 [<leftvol>:<rightvol>] (currently 46.4:46.4 dB)
jack.jack1c.pcm3 [<leftvol>:<rightvol>] (currently 46.4:46.4 dB)
jack.jack1c.pcm2 [<leftvol>:<rightvol>] (currently 46.4:46.4 dB)
jack.jack1c.jack6 [<leftvol>:<rightvol>] (currently 46.4:46.4 dB)
jack.jack1c.jack5 [<leftvol>:<rightvol>] (currently 46.4:46.4 dB)
jack.jack1c.pcm4 [<leftvol>:<rightvol>] (currently 46.4:46.4 dB)
jack.jack1d.mute ON|OFF (currently OFF)
jack.jack1e.mute ON|OFF (currently OFF)
record.select1.select1 <pcm3|pcm2|jack6|jack5|mix> (currently mix)
record.select1 [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
record.jack6 [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.pcm2 [<leftvol>:<rightvol>] (currently 50.9:50.9 dB)
misc.mute1 ON|OFF (currently OFF)
misc.pcm3 [<leftvol>:<rightvol>] (currently 50.9:50.9 dB)
misc.pcm4 [<leftvol>:<rightvol>] (currently 50.9:50.9 dB)
misc.mute2 ON|OFF (currently OFF)
misc.mute3 ON|OFF (currently OFF)
vmix0-enable ON|OFF (currently ON)
vmix0-rate <decimal value> (currently 48000) (Read-only)
vmix0-channels <Stereo|Multich> (currently Multich)
vmix0-src <Fast|High|OFF> (currently OFF)
vmix0-outvol <monovol> (currently 24.5 dB)
vmix0-invol <monovol> (currently 25.0 dB)
vmix0.pcm8 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB) ("mpegaudioparse1")
vmix0.pcm9 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)
vmix0.pcm10 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)
vmix0.pcm11 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)
osstest is also giving me errors and I'm not entirely sure what they mean..
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osstest
Sound subsystem and version: OSS 4.2 (b 2005/201111070705) (0x00040100)
Platform: Linux/x86_64 3.0.0-1-amd64 #1 SMP Sat Aug 27 16:21:11 UTC 2011
*** Scanning sound adapter #-1 ***
/dev/oss/oss_hdaudio0/pcm0 (audio engine 0): HD Audio play pcm1
Note! Device is in use (by PID 0/VMIX) but will try anyway
- Performing audio playback test...
<left> OK <right> OK <stereo> OK <measured srate 47995.00 Hz (-0.01%)>
/dev/oss/oss_hdaudio0/pcm1 (audio engine 1): HD Audio play pcm2
- Performing audio playback test... /dev/oss/oss_hdaudio0/pcm1: Device or resource busy
Can't open the device
/dev/oss/oss_hdaudio0/pcm2 (audio engine 2): HD Audio play pcm3
- Performing audio playback test... /dev/oss/oss_hdaudio0/pcm2: Device or resource busy
Can't open the device
/dev/oss/oss_hdaudio0/pcm3 (audio engine 3): HD Audio play pcm4
- Performing audio playback test... /dev/oss/oss_hdaudio0/pcm3: Device or resource busy
Can't open the device
/dev/oss/oss_hdaudio0/spdout0 (audio engine 4): HD Audio play spdifout1
- Performing audio playback test...
<left> OK <right> OK <stereo> OK <measured srate 47982.00 Hz (-0.04%)>
/dev/oss/oss_hdaudio0/spdout1 (audio engine 5): HD Audio play spdifout2
- Performing audio playback test...
<left> OK <right> OK <stereo> OK <measured srate 47993.00 Hz (-0.01%)>
/dev/oss/oss_hdaudio0/pcmin0 (audio engine 6): HD Audio rec select1
- Skipping input only device
/dev/oss/oss_hdaudio0/pcmin1 (audio engine 7): HD Audio rec jack6
- Skipping input only device
*** Some errors were detected during the tests ***
UPDATE-
Got sound out of the sub by doing 'vmixctl attach /dev/oss/oss_hdaudio0/pcm2'. I can get sound out of it now with 'osstest 2' but I can't seem to get any farther than that. I only get sound from the left and stereo tests which I'm guessing is because OSS doesn't realize it's a mono channel. I also tried 'vmixctl remap /dev/pcm0 2 1 4' but somehow I don't think I'm understanding the remapping correctly. Is there a way to attach /dev/dsp to more than one output?
I also tried 'sudo ln -sf /dev/oss/oss_hdaudio0/pcm2 /dev/dsp' and it'll play through the sub.. just not the other speakers.
Any ideas?

